174 



graphic nomenclature of the Spaniards), should be bounded 

 on the north by the confluence of the Uruguay with the 

 Arapay (Ygarupay of Arrowsmith) ; on the east by a line 

 which, beginning at Angostura, 6 leagues south of Santa 

 Teresa, passes by the marsh of Saint Michel, follows the 

 Rio San Luis as far as its mouth in the lake Merin, stretches 

 along the western bank of that lake, at a distance of 800 

 toises, passes by the mouth of the Rio Sabuaty, goes up to 

 that of the Rio Jaguarao, and following the course of this river 

 as far as Cerros de Angona, crosses the Rio Negro, and con- 

 tinuing a curve at the north-west, rejoins the Rio Arapuy. 

 The space comprehended between the Arapuy and the 

 Ibicuy, the southern limit of the province of the Missions, 

 belongs to the captain-generalship of Rio Grande. The Por- 

 tuguese Brazilians have not yet attempted to form settle- 

 ments in the province Entre Rios, (between the Parana and 

 the Paraguay), a country devastated by Artigas and Ramirez. 



In the savannahs (pampas), which, like an arm of the sea, 

 extend from Santa-Fe on the north, between the mountains 

 of Brazil, and those of Cordova and Jujuy*, the natural 

 limits of the intendancies of Potosi and Salta, that is of Upper 

 Peru and Buenos Ayres, seem likely to be altogether con- 

 founded. Chichas and Tarija are considered as the most 

 southern provinces of Upper Peru j the plains of Manso be- 

 tween Pilcomayo and the Rio Grande, or Vermejof, as well 



* This town, according to M. Redhead (Memoria sobre 

 la dilatation del aire atmosferico ; Buenos Ayres, 1819, p. 8 

 and 10), is situated 700 toises above the level of the sea. 

 The absolute height of the town of San Miguel del Tucuman 

 is, according to the barometric measurement of the same 

 author, (an inhabitant of Salta) 260 toises. 



+ The real name of this river, the banks of which were 

 heretofore inhabited by the Abipons, is Rio Inate. (See 

 Dobrizhofer, Hist, de Abiponibus, 1784, Tom. ii, p. 14). 



